我在eclipse RAP(Rich Ajax Platform 1.3.2)和Java 1.5版中使用jetty 6.1.23。我正在向浏览器发送PNG图像。这些是造成麻烦的代码:
服务器端:
response.setContentType(application.getMimeType(".png"));
response.setContentLength(outputSize);
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Max-Age", 0);
ServletOutputStream servletoutputstream = response.getOutputStream();
servletoutputstream.write(imageBytes); // this throws EofException
servletoutputstream.flush();
客户方:
<img src="path to the servlet that is loading the image">
奇怪的是,这个问题不会一直发生。在我们搬到生产后,它会间歇性地发生。我们的测试环境没有问题。生产和测试环境之间的唯一区别是,在生产环境中,用户远离我们的服务器,而在测试环境中,他们非常接近。
当抛出异常时,客户端浏览器端的图像根本不显示!到底是怎么回事?我该怎么做才能解决它或者至少有一个解决方法?
这是完整的异常跟踪(我突出显示了关键异常):
08 Feb 2012 11:49:08,955 ERROR [1584291438@qtp-2135195460-260] plugin.sda -
org.mortbay.jetty.EofException
at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:789)
at org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:568)
at org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:1006)
at org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:650)
at org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:590)
at com.scotiabank.ebss.common.viewer.util.ViewerUtil.sendBytes(ViewerUtil.java:533)
at com.scotiabank.ebss.common.viewer.servlets.ViewerServlet.doGet(ViewerServlet.java:242)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:180)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:126)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:60)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.equinox.http.jetty.internal.HttpServerManager$InternalHttpServiceServlet.service(HttpServerManager.java:318)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:924)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcher.writev0(Native Method)
at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:61)
at sun.nio.ch.IOUtil.write(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.write0(SocketChannelImpl.java:393)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:416)
at java.nio.channels.SocketChannel.write(SocketChannel.java:375)
at org.mortbay.io.nio.ChannelEndPoint.flush(ChannelEndPoint.java:232)
at org.mortbay.io.nio.SelectChannelEndPoint.flush(SelectChannelEndPoint.java:211)
at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:712)
... 27 more
答案 0 :(得分:2)
问题似乎与网络有关,与Jetty几乎没什么关系。
您正在尝试将大量数据写入已在另一端关闭的网络套接字。这就是Broken pipe
例外的含义。
您需要弄清楚HTTP连接意外关闭的原因。这个原因可能与Jetty有关,但我强烈怀疑没有。
答案 1 :(得分:1)
检查请求/响应大小限制。尝试下载较小的图像&lt; 4k。